Lamp hanger



A. J. THOMPSON Oct. 30,1928.

LAMP HANGER Filed Dec. 22. 1922 2 Sheets-$heet l Zln-ue-n for A. J.THOMPSON Oct. 30, 1928.

LAMP HANGER Filed Dec. 22., 1922 2 Sheets-Sheet 6H0: m? we Patented Oct.30, 1928.

uNI TED eLtrsoNi. J. 'zrtx oiin son; or CLEVELAND? omp.

LAMP Hansen.

n iicafian nieeneeember aeglezeseriainueoaus protect the inner mechanismandalsoto' renthe body of the lamp hanger more rigid.

'Anothefobje'et' oi? this invention is to'improve the a )peai'aiice ofthe installation:

Other others of the inventioi l Will'appear frointhe followingdescription-and claims I when considered in conhec'tion with theaccompanyingfdrawings, I p

V Figure 1 isa vertical section of! my i-in- Pleasing structure.

The canopy member 1 of'th'e upper hanger member has" firedtherewithin'thecontztcts 2 I 36- ivli ich'alreadaipted to be engagedbythe float-V ingfcoiitacts"3 fcarried by the lower hanger m nses, whichincludes the post 4. T he pos i'cmies a pivoted dog or latch memberadapted for locking engagement with ber 5Wl1lCll dependsfroni the topWall of the V canopymembe r 1." The" structure thus far referred to issubst'antial ly the same as that shown inmy copending application,Serial No. 394,341'towhielireferencemaybehad:

for a fuller understanding'o'f th'seine'. In the present form; however,the depending flange? is shorter thanthat in the copendingapplicati'oi-i,'as bther" means-are. here pro Vided for protectingthespring member 8 again t the same purpose as inthecompanionappli the" rechanger me jibersso as" to press the lower contacts into engagement with"the uppercontacts' and'also'to maintain the latch or dog member 5 lockederjigagementiwith the tubular member; The rope or cable 9 isaespted'tq slipp'ort the lower hanger IIIQIH" th'e' elements; Thisspring 8' serves grovide tension between ber inthe same manner as inthecompanion case and extends upwardly throughthe hollow post 4 andtubular member 5. and out through the housing around the sheave to whichreference will be made later, Fig, 1

shows the parts in latchedposi-tionand; just as in: my "priorapplication referred to, by pulling. on the rope 9 the lowerhangermember is raised slightly, thereby compressii g spring 8, untilthe latch'parts release, Whereupon the-lower hanger member and the partscarried thereby canzbe' lowered tothe ground.

The outlet member 10 fort-he electric Wires has scre'wthreadectengagement at 1]. with V V the lower end of: the stem member 4: and isprovided. with diametrically opposed open ings 12 for the Wires The"closure mom ber 14' which isiada iited to engage and close the bottom ofthe canopy member 1 is pr0- vided Withfan opening, 15 su-rroundingitl ieoutlet-member 10 with suflicient clearance, as indicated in thedrawings, and is provided about its" upper marginal edge portion withthe seat or shoulder 16 and the upwardly extending rib "or flange 17,sufficient clearance being provided at thispoint also to allow for anyirregularities in the surfaces of the parts, Without a frictionalbinding'effect.

The spring 18 engages the flange 19 of the closure member 14 and ismaintained under sufficient tension to hold the closure 14 in place bymeans of the nut 20 on the lower part of the outlet member 10. v Thisspring :t'nnctions'in the same Way, asthe spring'8 in that, when thepartsare closed: and latched in Fig. 1,-thelower canopy is yieldinglylieldto its seat and the lower hanger member may be elevated-to releasethe latching parts and permit the lamp to be lowered. springs 8' and 18obviously permit both the contacts and the lower canopy t'oy'iel'di-ngly reachthei-r respective seats upon closing and Also, thetwolatching of the hanger. The extreme lower portion of: the outletmember 10 'is threaded as indicated at 21-t'or attachment ofthe lamp, Aflange 2:2 is provided on the outlet member 10 for cooperation with theflange 19 inthe closure member so as to maintainthe closure memberl lupon theo'u-tletmember 10 until the closure member is assembled so as toengage the lower edge of the canopy member. The particularengagementfbetween the closure member 14 and the lower edge of thecanopy member. 1 in combination with the ill enclosed sheave housingconstitutes a means of sealing the lamp hanger against entrance of dirt,moisture or corrosive gases, without a frictional binding betweenmembers 1 and 14.

The sheave housing structure contains a chamber in which is mounted thesheave 23 for the cable 9. As shown in. Fig. 1, the sheave housingstructure is termed also with a duct 24 for leading the electric wiresfrom the conduitinto the top of the canopy member. Suitable openings areprovided in the top of the canopy member for the passage of the cableand the electric wires 25, the rib or boss 26 being provided entirelyabout the openings 27 and 27 and projecting up into the correspondingopening in the sheave housing so as to exclude the elements. Su'liicientclearance is allowed between the rib or boss 26 and the dependingportion 28 of the sheave housing structure so as to take care of minorirregularities in the surface of these parts. In this manner, asubstantially sealed connection is provided so as to protect the insidestructure against the elements. The sheave housing structureis securedto the top of the canopy member by means olf the ear portions 30,through which extend the same bolts as are employed in securing thetubula mem her 5 to the top of the canopy member int-he same manner asdisclosed in the former application above referred to. In the form shownin Fig. 1, the duct 24 for the wires is provided with a screw-threadedportion ill for attachment to a pipe conduit 32, the end portion of theduct as shown in this form of device extending in the opposite directionfrom the screw-threaded portion 33 provided for attachment to a threadedpipe or conduit 34 for the cable 9. Suitable ears 40, 41 are providedfor suspension of the lamp hanger.

One side wall of the sheave housing is provided with an opening toreceive a circular disc cover 43 which is provided with acorrcspondingly formed flange tor engagement in the opening. This coverneed'not necessarily be circular but may be of other "forms. This coveris provided with acentral opening in registry with tin-opening providedin the opposite wall ol the sheave housing for the bolt 45 which securesthe closure 48 in position, and upon which is mounted the sheave 23. Thesheave housing structure, when the closure 43 is in position, isentirely and eflfectively closed. that is, when it is attached to thetop of the canopy member and wvlien the conduit-s 32 and 34 areassembled therewith. The curved tapering surfaces of the closure 43 atthe seat 42 provide means of centering the closure 43 upon assembly ofthe parts and provides also means of insuring true running of thesheave. i

In the modified form shown in Fig. 3 the duct 46 for the electric wiresextends in the same direction as the duct for the cable, but

is otherwise of the same construction as the lirst form of device.

In my improved lamp hanger structure, I have provided means forell'ectively sealing the parts against attack by the elements such asnatural precipitation and other moisture, as well as corrosive gases anddirt; and the closure member 14 serves also as a means ot providingamore rigid arrangement whereby swaying movement of the lamp is reducedto a minimum. The conduits which are attached to the sheave housingstructure, for enclosing the electric wires and cable, provide also ameans oil? not only protecting these parts against the elements but alsoa'tl'ord a means of bracing the entire lamp hanger structure. In mypresent arrangen'ient, l have eliminated also the use of openings in theside walls of the canopy member for passage of'the electric wires, scommonly found in the older torms of such devices. lVith all, myimproved device proves not only eflicient in service, but also presentsa very neat and attractive appearance.

hat I claim is:

1. A lamp hanger structure, comprising a main hanger member, a lamphanger mem ber, means for securing said members together, said mainhanger member having a canopy member enclosing said securing means, aninverted canopy for closing said first named canopy against the entranceof foreign elements, said inverted canopy having a central aperture forthe lamp hanger member, and a spring surrounding said lamp, hangermember and engaging said inverted canopy so as to provide a yieldingengagement therebetween.

2. A lamp hanger structure, comprising upper and lower hanger members,releasable means actuated by relative vertical movement between saidmembers for latching them together, two canopies, one carried by each ofsaid members, and together adapted to completely enclose the hangermembers, and yielding means between one of said canopies and the memberon which it is mounted, thereby permitting yielding re ative movementbetween said members lor actuation oil the latching parts when thecanopies are engaged with each other.

3. A lamp hanger structure, comprising upper and lower hanger-members,cooperating contact means 011 said members, the contact means on onemember being yieldingly mounted, and uninterrupted closure canopies onsaid members, one of said canopies being yieldingly .mounted. wherebythe canopies and contacts both yieldingly reach seating engagement uponrelative approach of said members, and when engaged, the contactsarecompletely enclosed by the canopies.

4. A lamp hanger structure, comprising upper and lower hanger members,releasable latching means. between said members, co-

operating contact means on said members; the contact means on one memberbeing yielding- 1y monnted, uninterrupted closure canopies on saidmembers, one of said canopies being yieldingly mounted, whereby thecanopies and contacts both yieldingly reach seating engagement uponrelative approach of said by the canopies.

In testimony whereof I hereby aflix my signature.

ALLISON J. THOMPSON.

